Motor lock



Feb. 16 1926.

J. D. PARDOE MOTOR LOCK Filed Jan. 3 1925 fa/272' .D. Para/0 6.

v- ANNA? Patented Feb. 16, 1926.

UNITED STATES 1,572,947 PATENT OFFICE.

JOHN D. PARDOE, OF MEMPHIS, TENNESSEE, ASSIGNOR OF ONE-HALF TO ROBT. T.

CAMERON, OF MEMPHIS, TENNESSEE.

MOTOR LOCK.

Application an January 30, 1925. Serial in. 5,903.

To all whom it may concern:

Be it knownthat I, JOHN D. Finance, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Motor Locks, of

. which'the following is a specification;

My invention relates to anti-theft devices for automobiles, motor boats, air craft, and'all types of vehicles propelled by internal combustion engines. p

The primary object of the invention is the provision of a novel and improved motor lock controlling the passage of fuel to the motor in either gaseous or liquid form.

Another object is the provision of a motor lock arranged for automatic locking when the mechanism thereof issubje'cted to unauthorized tampering or manipulation.

A further object is the provision of such a lock wherein the operating mechanism may be adjusted for predetermined limits of authorized movement. v

A still further object is the provision of an encased locking mechanism adapted for mounting on the instrument board of automobiles in such manner that removal of the casing automatically throws the lock to closed position.

With these and such other objects in view will be apparent from the description, my invention resides in the novel construction, combination and arrangement of parts hereinafter described and claimed,[and illustrated in the accompanying drawings, wherein I v j Figure 1 is a vertical section through a look as mounted on an instrument board;

Figure 2, a section through a fuel passage conduit with an element of the lock in closed position; I

Figure 3, an end view, partly in section from the right of Figure 2;

Figure 1, an elevation of a trip hook re lease means;

Figure 5, an elevation of the trip hook;

Figure 6, a similar elevation at a right angle to Figure 5; I

Figure 7, an elevation, partly in section, of a fuel conduit assembly;

Figure 8, an elevation of a employed, and y i Figure 9. an end view of a locking nut used in conjunction with the bolt.

fastening bolt instrument or dash board 1 of an automobile, is provided with a bore 2 to receive for passage therethrough of a flexible conduit 41 having its end attached to an anchor block 5 closing the end of the tube. The opposite end of tube 3 is outwardly flanged to seat againstthe adjacent face of the dash and the tube is retained in position by the flat rear wall 6 of a cupped casing body 7. The body 7 of the casing is provided with an inner and similarly formed shell 8 the side walls of which are spaced slighty from the body 7 to receive therebetween a casing cover 9- having upstruck spring tongues 10 for locking engagement in perforations formed in the inner shell 8 when the cover is applied. The two sections of the casing are secured together and the entire assembly clamped on the dash board by means of fastening bolts 11, of which there may be one or more as desired, passed through the dash and back of the casing to receive the locking nuts 12 applied from withinthe casing before the cover is locked on.

Slida'bly disposed through the casing cover 9 and extending through the back of the easing into the tube 3, is a lock operating control rod 13 provided with an enlarged handle grip 141 on its outer end whereby the rod may be moved in and out relative to the casing. rod is guided and supported in the tube 3 bybmeans of a leaf spring 15 carried by the tu e.

Within the casing the control rod is provided with a shoulder to limit outward movement thereof, in the form of a sleeve 16 adjustable longitudinally on the rod for a predetermined setting by ineans of the set screw 17, and connected to the inner end of the controlrod is a flexible wire 18 movable, and extending through the conduit 1. Secured on the inner face of the casingcover is a tumbler lock 19 provided with'its key 20 and having a bolt bar 21 slidably disposed against the rear wall ofthe casing for engagement in either of notches. 22 and 23 formed in the control rod 13. The bolt is retained in engaged position by pressure of the leaf spring 24: carried by the casing and supporting the lower end of the bolt. Through manipulation of the lock 19 the therethrou'gh a tube 8 perforated at one end l The inner end of the'control preferably as shown between the carburettor 25 and the intake manifold 26, which section designated as 27 is provided with a butterfly valve 28 normally retained in closed position by means of a coil retraction-spring 29 having. one terminal attached to an anchor "lug'30' in "the wall "of the section, and its other terminal attached-to a'lug 31 extending from the adj acent face of the va'lve28, which 'connection mamtains the'valve in closed position. v

The lug 31 is continued on the opposite face" of the valve in an oppositely extending lug-32ito which is secured by means of a trip hook 33,the free end of the flexible wire- '18 extending from the control rod 13. "The wire 18 is introduced in the section-27 through a bushing34 threaded through a wall thereof and having itsinner end formed in a cone shaped portion 35 extending with "in the passage.

The'fconstruction of trip hook 33 is'be'st shown'in Figures 1,5 and 6, and it is formed er a pair'of crossed arms 33 and'33 pivoted at their point ofintersection-on thebent terminal 36 of? the wire 18. "These arms are hooked at one' end for engagement in their normal position "in the eyelet37 of lug '32, whereby thewire 18 is attached to the lug for-operation ofthe'valve'28. 'The' opposite ends "ofthe' trip hookarms are so spaced, that upon engagement with "the cone endf35 of the bushing;34, they-will' be forced apart to open the-hook and release thelug 32, periitittingspring 29 to snap thev'alvei back to normal closed position. I

In assembling the fuel passage arrangement, the section 27 is secured in the pipe line by means of the bolts 38 passed through the bores39 and adjacent carburettor and ma-nifoldflanges, and anchored by nuts 40,

the locking faces of which are provided with a series of notchesl whereby means maybe provided to lock'the nuts against removal. Similar notches 42 are formed in the head of bolts 38. a i

In 'the operation of my invention, the parts are assumed to be in their normal or valve closed position as shown in Figures 1 and 2, whereby the'flow of gas to the motor is cut off. lVhen an operator desires to start the engine, lock 19 is manipulated to withdraw bolt 21" from the control rod notchi23, and the rod is pulled out until arrested by engagement'of the shoulder 16 with thewall of thecover, the shoulderyhaving been soset 1 that thetravel of the rod and consequently in s rin r'29 to close the valve and the parts again locked in closed position as first described.

If an unauthorized person succeeds in picking lock'ELQ'and pulls out rod 13, the

rod cannot be locked in open position, and if a further pull is'made, the shoulder will slide over the rodpermitting continued outward movement thereof" to bring the trip hook into engagement with the cone'35,-openmg the armsv and allowing the spr1ng'29 to snap the valve into permanent closed posi tion,.-necessitating a dismantling bftheassembly to reopen. The same result will follow should the casing be' forcibly removed from theclash.

While in. this preferred form .of' themvention'I have. shown and-described the lock as applied to automobilestan-d between the carburettor. and intake-manifold, Ifdesire "it' to be understood that the invention 'isnot limited to such application and use.

same. :It is my intention that any desired modifications and changes in'the details thereof may bemade as willfall-- within the scope of the invention as claimed.

I claim g A 1. A motor lock comprising a spring closed valve'disposed in. afuel' feed line, a flexible actuating wireexten'ding" from said valve for operation thereof, a' lockcasing, a control rod movabletherein and connected with said valve actuating Wire, means on said rod for apredetermined adjustment of movement thereof, means in said casing for locking said rod in a plurality of positions, and means for automatically closing said valve on movement-ofsaid rod-inone directionbeyond the predetermined setting there- 0 limit of travel in one direction.

3. A motor lockcomprising 'a spring closed fuel feed valve, operating means therefor adapted to be locked invarious predetermined positions, a pivoted connection between the valve and operating means, and means to automatically release the connection to permit closing of the valve upon undue movement of the operating means.

4. A motor lock comprising a spring closed fuel feed valve, operating means therefor adapted to be locked in various predetermined positions, a releasable grapple connecting the valve and operating means, and means to automatically release the grapple upon undue movement of the operating means to permit closing of the valve.

5. A motor lock comprising a spring closed fuel feed valve, operating means therefor adapted to be locked in various predetermined positions, a pivoted hook connecting the valve and operating means, and a stationary cam engageable by the free end of the hook upon undue movement of the operating means to release the valve.

In testimony whereof I a'flix my signature.

JOHN D. PARDOE. 

